matlab R2020b randperm fuction is not random

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Hi,
When I use matlab R2020b on linux platform, commands follow:
order = randperm(10)
disp(order)
results show:
6     3     7     8     5     1     2     4     9    10
6     3     7     8     5     1     2     4     9    10
Curiously, the result is fixed,i.e., when I run this script again, the same results appear. Does anybody know what's wrong? thanks
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Accepted Answer

Fangjun Jiang
Fangjun Jiang on 14 Jul 2022
Duh! You store the result in "order" and display it again. Of course they are the same!
order = randperm(10)
order = 1×10
5 7 6 10 3 1 4 9 2 8
disp(order)
5 7 6 10 3 1 4 9 2 8
order = randperm(10)
order = 1×10
6 7 5 10 3 8 1 2 9 4
disp(order)
6 7 5 10 3 8 1 2 9 4

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